Yemen's Houthi group said on Friday it hit a facility belonging to the state-controlled oil giant Saudi Aramco in Riyadh, Saudi Arabia, in an attack comprising six drones.

Yahya Sarea, a spokesperson for the Iran-backed rebel group's military, did not divulge further details about the targets he said were attacked.

Sarea said operations against Saudi Arabia will continue and escalate as long as Saudi "aggression" against Yemen continues.